Heating attachment for stoves



(No Model.)

M. H. BALL.

HEATING ATTACHMENT TOR sTovBs;

N .$52,730. P 1: 1; d Nov. 16,1886. o #7J-.a (im e NITED STATES PATENT Carica.

MADISON II. BALL, on MADISON, WISCONSIN.

, HEATING ATTACHMENT FOR STOVES.

SPECIFICATION forming part of Letters Patent No. 352,730,dated November 16,v 1886. Application niedretruaryao, 18st. sen-ai No. 192,681. (No man to be a full, clear, and exact description of the invention7 such as will enable others skilled in the art to which it appertains to make and use the same. l 'Y My invention relates to that class of heating attachments which are designed to draw in the outer air and to heat the same by means ofthe waste heat escaping through the smoke-pipe, thus not only increasing the heating capacity of the stove, but also Ventilating the apartment in which the stove is placed.

My invention more particularly relates to those drums or heaters through whichthe p roducts of combustion pass from the re, and which contain a series of airtnbes extending across the line of draft, so as to be enveloped by the escaping products of combustion, whereby the temperature of the air in said tubes is raised before escaping into the room.

My invention is applicable not only to heating-stoves, but also to furnaces, open grate's, and other heating apparatus; and the objects of my invention are to simplify the construetion of this class of attachments, to increase their efficiency of action, and to provide means whereby the externalsurfaces of the air-tubes may be treadily freed from accumulations of soot, dust, Sto., which impede the action of escaping heat upon the air in said tubes.

Vith these ends in view my invention-consists in certain peculiar and novel features of construction and arrangement, as hereinafter` described, and Specifically set forth in the claims.

part of a heatingstove with my improved attachment applied thereto. Fig. 2 is a detached perspective View of my improved heater with its casing removed. Fig. Sis a detached view of the scraper-frame.y Fig. 4 is a detached view of the cold-air hood.

Y Y' In the said drawings,A designates thefront plate of the heater, and A the back plate, said plates being perforated to receive the front and back ends of the cold-air tubes C, as' shown. These plates may be either of rectangular form, as illustrated in the drawings, or of any other suitable form. The perforations in the front plate are preferably so disposed with relation to those in the back plate that the air-tubes shall be parallel -with each other and have an upward inclination towardthe front of the heater, the-object of this inclination being to assist the natural current produced by heating the air in the tubes, and thus facilitate the discharge of such air into the room; 'The front and back plates are connected by two side plates, D E, which are suitably secured to the sides of the front and back plates-as by bolts or Otherwise-and the space thus inclosed is covered by a cap, F. The Yeasing thus 'constructed constitutes a 'heatingdruun and rests upon a base-plate, G, in case the attachmentis applied to a heating-stove, which is placed upon the top H ofthe stove.

I designates a cold-air hood,which may be of greater area at bottom than at top, as shown, or of equal area throughout, or of any other desired form. In any event this hood has a back piece, i, two side pieces, t, and a neck, i2, eX- tending down from its base to receive the upper end of a coldair due, H', the front of the hood being left open. This hood is bolted or otherwise secured at its frontedges .to the rear of the drum, `and thusforms a'cold-air chamber behind the drum and in communication with the rear ends of the tubes C, andsaid hood rests upon the rear part of the base-plate G, through which the cold-air nue H communicates at its upper end with the interior of the hood. l

J designates the scraper-frame for cleaning the external surfaces ofthe tubes G. This frame may be of wire, cast-iron, or other suitable material, and may be made either in asingle piece or in two or more pieces bolted together, as

shown; or there may be two or more separate sections. The scraper is, however, preferably formed of cast-iron, and in any event is provided with a series of holes, j, corresponding in number and location with the pipes C, and

Ico

of such size as to snugly surround said pipes.

The scraper-frame, or each independent seca tion of the same, where such are used, is pro-` vided with a handle, j', properlysecured to the frame and extending out through the front of the heater, as shown. Instead of extending out through the front of the heater, the handle or handles j' may extend out through the back of the saine; or two sets of handles may be used, one set extending through the back of the heater.

In case the, heater is used upon a heatingstove, anornamental open-work plate, K, is secured to the front of the drum, so as to conceal the front plate, A, the front handles, j,extend ing through the same. as shown. This plate K would not be used in furnaces.

In applying the device to open fireplaces the front and back plates, A B, with the tube C and scraper-framed, would only be used,

such parts being inclosed in masonry, and the cold-air chamber being formed in rear ot" the heater by masonry-work also, the hood I being omitted. In this case the handles j would eX- tend out through the l'ront wall of the chimney. The precise form of the baseplate G is ofcourse to be varied to snit different forms of stoves or furnaces, and said plate may be dispensed with when the device is applied to open-grate iireplaces.

The manner of using and operating the attachment is as follows: rIhe tubes are iirst inserted into the front or back plate, and then the scrapenfraine is placed upon the tubesf The remaining plates are then placed iu position, and finally the hood is properly located.

` lIhe products of combustion pass up through the baseplate G (which has an opening for the purpose) into the drum and circulate around the tubes, heating the air therein and causing it to pass out into the room. The products of combustion then pass out of the drum through a neck, f, on cap F and into the smoke-fine. Cold air enters the hood through flue H', and thus maintains the supply of air in pipes C. YVhen soot, dust, &c., accumulate upon the tubes, the scraper frames or frame are moved back and forth upon said tubes by means of the handlesj, and the exterior surfaces of the tubes are quickly cleaned. After having used the scraper it is pushed back against the back or pulled out against the front of the drum, so as to leave the interior ot' the drum open for the free circulation of the products of combustion.

As thus constructed the heating attachment is simple and durable, and may easily be kept in proper condition for efficient action.

Having fully described my invention,what I claim as new, and desire to secure by Letters Patent, is-

l. The combination, with a stove,ot'thcdrum resting on the stove and in communication therewith, and provided with au opening at its upper end for the exit ofthe smoke, air-pipes passing transverely through the drum for discharging the heated air into the room, a hood secured to one side of the drum and covering the adjacent ends of the air-pipes, the pipe H, the upper end of which communicates with the hood for supplying cold air to the drum, and a scraper, substantially as described, located within the drum, substantially as set forth.

2. The combination, with the stove, of the drum consisting, essentially, of the perforated front and back plate, air-tubes connected to said plates, the side plates, the top plate, the base G, and the hood, the latter secured to the back plate ofthe drum and covering the rear ends of the air-tubes, and the pipe H', all of f the above parts constructed substantially as described.

In testimony whereof` I have signed this specification in the presence of two subscribing witnesses.

IIIADISON H. BALL.

Vtnesses:

WM. H. Roenes, F. L. PERRIN. 

